Title :
Measuring the Water Temperature via Two-Band Planer Laser Induced Fluorescence
Author :
Xu, Chunyan ; Cai, Xiaoshu
Author_Institution :
Coll. of Sci., Univ. of Shanghai for Sci. & Technol., Shanghai, China
Abstract :
The technique of planer laser induced fluorescence (PLIF) is applied to measure the water temperature. The fluorescence dye, Rhodamine B, is used as the temperature indicator. Experimental results show that two spectral bands, in the ranges of 572.2-573.1 nm and 597.6-607.5 nm, can be selected for their strong difference in the intensity of the fluorescence quantum yield. Thus, the ratio of these fluorescence intensities makes possible the determination of water temperature from 293 K to 363 K with an uncertainty of plusmn1 K, eliminating the effects of fluctuation of illuminating light intensity, the measuring volume and dye concentration.
Keywords :
dyes; fluorescence; temperature measurement; temperature 293 K to 363 K; wavelength 572.2 nm to 573.1 nm; wavelength 597.6 nm to 607.5 nm; Fluorescence; Laser theory; Liquid crystals; Metalworking machines; Power lasers; Power measurement; Temperature dependence; Temperature distribution; Temperature measurement; Temperature sensors;
Conference_Titel :
Photonics and Optoelectronics, 2009. SOPO 2009. Symposium on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-4412-0
DOI :
10.1109/SOPO.2009.5230278
